Im no where near the expert Soly is but i agree with his reply. Also, if your experiencing scatter before you go to bed make a paste out of DE and rub it on your face. For some reason the DE draws the worms out of your skin and you'll get some relief from the crawling sensation. After 30 minutes and the DE has had time to dry I'll remove it and put Noxzema on my face and neck I figure if it works for my butt hole its gotta help my face lol